ByteOS Network

NVD Vulnerability Details :

CVE-2026-59869

Analyzed

Source-security-advisories@github.com

Published At-08 Jul, 2026 | 16:16

Updated At-13 Jul, 2026 | 15:05

js-yaml is a JavaScript YAML parser and dumper. From 3.0.0 before 3.15.0 and from 4.0.0 before 4.3.0, js-yaml can spend quadratic CPU time parsing a document whose size grows only linearly when a chain of mappings uses merge keys where each mapping merges the previous one. This issue is fixed in versions 3.15.0 and 4.3.0.

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Metrics

Type	Version	Base score	Base severity	Vector
Secondary	3.1	7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
			N/A

Type: Secondary

Version: 3.1

Base score: 7.5

Base severity: HIGH

Vector:

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Type: N/A

Version:

Base score:

Base severity: N/A

Vector:

CPE Matches

nodeca>>js-yaml>>Versions from 3.0.0(inclusive) to 3.15.0(exclusive)

cpe:2.3:a:nodeca:js-yaml:*:*:*:*:*:node.js:*:*

nodeca>>js-yaml>>Versions from 4.0.0(inclusive) to 4.3.0(exclusive)

cpe:2.3:a:nodeca:js-yaml:*:*:*:*:*:node.js:*:*

Weaknesses

CWE ID	Type	Source
CWE-407	Secondary	security-advisories@github.com

CWE ID: CWE-407

Type: Secondary

Source: security-advisories@github.com

References

Hyperlink	Source	Resource
https://github.com/nodeca/js-yaml/commit/24f13e79ee1343a7e30bd6f6c9d9cdbf0ac9b2b7	security-advisories@github.com	Patch
https://github.com/nodeca/js-yaml/commit/59423c6f8cdc78742ac00e25a4dd39ef16b702e4	security-advisories@github.com	Patch
https://github.com/nodeca/js-yaml/releases/tag/3.15.0	security-advisories@github.com	Release Notes
https://github.com/nodeca/js-yaml/releases/tag/4.3.0	security-advisories@github.com	Release Notes
https://github.com/nodeca/js-yaml/security/advisories/GHSA-52cp-r559-cp3m	security-advisories@github.com	Exploit Vendor Advisory
https://github.com/nodeca/js-yaml/security/advisories/GHSA-52cp-r559-cp3m	134c704f-9b21-4f2e-91b3-4a467353bcc0	Exploit Vendor Advisory